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Example: car bgp egress route filtering with prefixlist with soft-reconfig

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r1

hostname r1
vrf def v1
 rd 1:1
 exit
int lo0
 vrf for v1
 ipv4 addr 2.2.2.1 255.255.255.255
 ipv6 addr 4321::1 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int lo1
 vrf for v1
 ipv4 addr 2.2.2.11 255.255.255.255
 ipv6 addr 4321::11 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int lo2
 vrf for v1
 ipv4 addr 2.2.2.21 255.255.255.255
 ipv6 addr 4321::21 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int eth1
 vrf for v1
 ipv4 addr 1.1.1.1 255.255.255.252
 ipv6 addr 1234:1::1 ffff:ffff::
 mpls enable
 exit
prefix-list p4
 sequence 10 deny 2.2.2.11/32
 sequence 20 permit 0.0.0.0/0 le 32
 exit
prefix-list p6
 sequence 10 deny 4321::11/128
 sequence 20 permit ::/0 le 128
 exit
router bgp4 1
 vrf v1
 no safe-ebgp
 address car
 local-as 1
 router-id 4.4.4.1
 neigh 1.1.1.2 remote-as 2
 neigh 1.1.1.2 soft-reconfig
 neigh 1.1.1.2 prefix-list-out p4
 red conn
 exit
router bgp6 1
 vrf v1
 no safe-ebgp
 address car
 local-as 1
 router-id 6.6.6.1
 neigh 1234:1::2 remote-as 2
 neigh 1234:1::2 soft-reconfig
 neigh 1234:1::2 prefix-list-out p6
 red conn
 exit

r2

hostname r2
vrf def v1
 rd 1:1
 exit
int lo0
 vrf for v1
 ipv4 addr 2.2.2.2 255.255.255.255
 ipv6 addr 4321::2 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int lo1
 vrf for v1
 ipv4 addr 2.2.2.12 255.255.255.255
 ipv6 addr 4321::12 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int lo2
 vrf for v1
 ipv4 addr 2.2.2.22 255.255.255.255
 ipv6 addr 4321::22 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int eth1
 vrf for v1
 ipv4 addr 1.1.1.2 255.255.255.252
 ipv6 addr 1234:1::2 ffff:ffff::
 mpls enable
 exit
router bgp4 1
 vrf v1
 no safe-ebgp
 address car
 local-as 2
 router-id 4.4.4.2
 neigh 1.1.1.1 remote-as 1
 neigh 1.1.1.1 soft-reconfig
 red conn
 exit
router bgp6 1
 vrf v1
 no safe-ebgp
 address car
 local-as 2
 router-id 6.6.6.2
 neigh 1234:1::1 remote-as 1
 neigh 1234:1::1 soft-reconfig
 red conn
 exit

r1 tping 100 60 2.2.2.2 vrf v1
r1 tping 100 60 4321::2 vrf v1
r1 tping 100 60 2.2.2.12 vrf v1
r1 tping 100 60 4321::12 vrf v1
r1 tping 100 60 2.2.2.22 vrf v1
r1 tping 100 60 4321::22 vrf v1
r2 tping 100 60 2.2.2.1 vrf v1
r2 tping 100 60 4321::1 vrf v1
r2 tping 0 60 2.2.2.11 vrf v1
r2 tping 0 60 4321::11 vrf v1
r2 tping 100 60 2.2.2.21 vrf v1
r2 tping 100 60 4321::21 vrf v1
  1. Install ContainerLab as described here
  2. Fetch rout-bgp710 file
  3. Launch ContainerLab rout-bgp710.yml topology: 

   containerlab deploy --topo rout-bgp710.yml
4. Destroy ContainerLab rout-bgp710.yml topology: 

   containerlab destroy --topo rout-bgp710.yml
5. Copy-paste configuration for each node in the lab topology

  1. Fetch or compile freeRtr rtr.jar file.
    You can grab it here
  2. Fetch rout-bgp710.tst file here
  3. Launch rout-bgp710.tst test: 

   java -jar ../../rtr.jar test tester rout-bgp710 path ./ temp ./ wait
4. Destroy freeRtr rout-bgp710.tst test: 

   Ctrl-C (In freeRtr test window)